<xml>
  <ToUserName><![CDATA[{$touser}]]></ToUserName>
  <FromUserName><![CDATA[{$fromuser}]]></FromUserName>
  <CreateTime>{time()}</CreateTime>
  <MsgType><![CDATA[text]]></MsgType>
  <Content><![CDATA[{$content}]]></Content>
</xml>